Public bug reported:
S0ix-states represent the residency in the Intel® SoC idle standby power states.
The S0ix states shut off part of the SoC when they are not in use. The S0ix
states are triggered when specific conditions within the SoC have been achieved,
for example: certain components are in low power states. The SoC consumes the
least amount of power in the deepest (for example, S0i3) state.
GLK S0ix is triggered by two paths:
(1) by system PM, e.g "suspend-to-idle" triggered by pressing the power button
on Android device or command manually triggered on any Linux based distros;
(2) by runtime PM, i.e no system activities with display off.
S0ix should simply work in theory with trigger path (1) if we have the device
drivers ready. On GLK, we require the below PCI device drivers with system PM
support. ACPI device requirements are WIP.
I2C designware PCI driver
USB XHCI PCI ID
Intel trace Hub[NPK) PCI ID
SPI BXT PCI ID
SCSI UFS BXT PCI host ID
Graphics
Audio
PWM
HSUART
Security engine
S0ix with trigger path (2) require work as defined below.
All the above device drivers need to support runtime PM (already defined in
the same LCK above)
PCI root port to support runtime PM
Both paths will require LP#1685690 [GLK] intel_idle driver support for S0ix
support.
Stakeholders : CCG
Sub task:
[GLK] Runtime D3 (RTD3) Enabling
[GLK] [S0ix] Telemetry Enabling
** Affects: firefox (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1685691
Title:
[Feature] GLK:S0iX Enabling
Status in firefox package in Ubuntu:
New
Bug description:
S0ix-states represent the residency in the Intel® SoC idle standby power
states.
The S0ix states shut off part of the SoC when they are not in use. The S0ix
states are triggered when specific conditions within the SoC have been
achieved,
for example: certain components are in low power states. The SoC consumes the
least amount of power in the deepest (for example, S0i3) state.
GLK S0ix is triggered by two paths:
(1) by system PM, e.g "suspend-to-idle" triggered by pressing the power button
on Android device or command manually triggered on any Linux based distros;
(2) by runtime PM, i.e no system activities with display off.
S0ix should simply work in theory with trigger path (1) if we have the device
drivers ready. On GLK, we require the below PCI device drivers with system PM
support. ACPI device requirements are WIP.
I2C designware PCI driver
USB XHCI PCI ID
Intel trace Hub[NPK) PCI ID
SPI BXT PCI ID
SCSI UFS BXT PCI host ID
Graphics
Audio
PWM
HSUART
Security engine
S0ix with trigger path (2) require work as defined below.
All the above device drivers need to support runtime PM (already defined in
the same LCK above)
PCI root port to support runtime PM
Both paths will require LP#1685690 [GLK] intel_idle driver support for S0ix
support.
Stakeholders : CCG
Sub task:
[GLK] Runtime D3 (RTD3) Enabling
[GLK] [S0ix] Telemetry Enabling
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